Cheap Flight Tickets from Washington (DCA) to Ontario (ONT), Starting at $324

Good to Know: Cheapest and Fastest DCA - ONT Flights

Useful information for finding best airline tickets from Ronald Reagan Washington National to Ontario International on your next trip.

Cheapest Round Trip Flight

$324

WN Southwest Airlines • 3 stops • 25h 50m

Aug 08 – Aug 16

The cheapest round trip flight from Washington to Ontario (DCA-ONT-DCA) is currently $324

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Fastest Flight

12h 4m

The fastest nonstop flight from Washington to Ontario (DCA-ONT) takes 12h 4m

Top Airlines Flying from Washington to Ontario

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

Latest Flight Deals from Washington (DCA) to Ontario (ONT)

Compare and book low fare round-trip air tickets from Washington to Ontario. Ideal for travelers with confirmed return itineraries.

Aug 08 - Aug 16, Economy
WN
Washington → Ontario
25h 50m
6:55 AM - 7:45 PM • 3 stops
WN
Washington → Ontario
28h 50m
2:30 PM - 11:00 AM • 3 stops
$324
Southwest Airlines
Aug 08 - Aug 16, Economy
WN
Washington → Ontario
18h 35m
7:00 AM - 3:15 PM • 1 stop
WN
Washington → Ontario
28h 50m
2:30 PM - 11:00 AM • 3 stops
$336
Southwest Airlines
Aug 08 - Aug 16, Economy
DL
Washington → Ontario
12h 4m
5:59 PM - 10:23 PM • 1 stop
DL
Washington → Ontario
10h 56m
10:40 PM - 8:36 AM • 1 stop
$374
Delta Airlines
Aug 08 - Aug 16, Economy
WN
Washington → Ontario
18h 35m
7:00 AM - 3:15 PM • 1 stop
WN
Washington → Ontario
19h 5m
5:10 AM - 7:55 PM • 1 stop
$661
Southwest Airlines
Aug 08 - Aug 16, Economy
WN
Washington → Ontario
15h 35m
9:25 AM - 4:00 PM • 1 stop
WN
Washington → Ontario
20h 25m
8:30 AM - 11:55 PM • 1 stop
$661
Southwest Airlines
Aug 08 - Aug 16, Economy
WN
Washington → Ontario
12h 10m
10:00 AM - 2:30 PM • 1 stop
WN
Washington → Ontario
15h 10m
6:45 AM - 6:55 PM • 1 stop
$661
Southwest Airlines

Fly from Washington to Ontario with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Washington to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Washington to Ontario Flights

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from DCA to ONT?
The most popular airline flying from Washington to Ontario are
Can I fly from DCA to ONT non-stop?
NO
Which airlines fly nonstop between Washington and Ontario?
The non-stop flights between Washington and Ontario are .
What’s the earliest departure time from DCA to ONT Airport?
The earliest flight leaves DCA at 6:55 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Washington to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from DCA to ONT?
Read the fare rules of the Washington to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and Ontario?
operate flights between Washington and Ontario
How long does a flight from Washington to Ontario take?
It takes approximately 5 hour to fly non-stop from DCA to ONT, which is 2264.8 miles by air.
Which airlines provide the cheapest flights from Washington (DCA) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from DCA were found on WN : USD 661
Do I need a passport to fly between DCA and ONT?
No
What’s the latest departure time from DCA to ONT ?
The last flight leaves DCA at 5:59 pm

Washington (DCA) to Ontario (ONT): Airport Information

Origin Airport Ronald Reagan Washington National , Washington, US
Destination Airport Ontario International , Ontario, US
Distance 2265 miles

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